Irena
- County:
- Harrison County
- County Seat:
- No
- Area (mi²):
- 0.881
- State:
- Missouri
Irena is a village located in Harrison County, Missouri. Irena has a 2026 population of 13. Irena is currently declining at a rate of -7.14% annually and its population has decreased by -7.14% since the most recent census, which recorded a population of 14 in 2020.
The median age in Irena is 57.8 years: 58.5 years for males, and 57.3 years for females. For every 100 females there are 72.7 males.